CN101928531B - Production method of modified casein label adhesive - Google Patents
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- CN101928531B CN101928531B CN2009101177154A CN200910117715A CN101928531B CN 101928531 B CN101928531 B CN 101928531B CN 2009101177154 A CN2009101177154 A CN 2009101177154A CN 200910117715 A CN200910117715 A CN 200910117715A CN 101928531 B CN101928531 B CN 101928531B
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Abstract
The invention relates to a production method of a modified casein label adhesive, comprising the following steps: firstly, dissolving polyvinyl alcohol in water under high temperature to obtain polyvinyl alcohol solution; secondly, dissolving borax and casein to obtain casein solution; thirdly, gelatinizing corn starch at 80-85 DEG C to obtain gelatinized corn starch; and finally mixing the polyvinyl alcohol solution with the casein solution and stirring the solutions at 70-75 DEG C to react, sequentially adding dispersing agents, gelatinized corn starch, mixed chelating agents, sorbic acid and disodium hydrogen phosphate to reaction solution and obtaining the finished casein label adhesive after uniform mixing. The invention uses two heavy metal salts as crosslinking agents to modify the casein label adhesive, thus effectively improving the water resistance and the curing rate of the casein label adhesive. The modified casein label adhesive can be widely applicable to manual and mechanical label package of the boxes for food, drinks and cigarette, especially to labeling machines of beer.
Description
Technical field
The present invention relates to a kind of working method of label glue, relate in particular to a kind of working method of modified casein label adhesive.
Background technology
Adhesive for label is the important link of packing of product image appearance; Particularly the decals of bottled product requires higher; Like developing rapidly of China's brewing industry, annual beer production reaches more than 2,000 ten thousand tons, and each beer prodn producer is in order to enlarge output and to improve product specification; What have transforms homemade trade mark Labelling Machine; The packaging production line that the introduction that has is external advanced, not only the decals machine speed by original per hour several thousand bottles bring up to several ten thousand bottles, and adopt one after another aluminium foil with tinfoil paper conduct seal and the trade mark label; The strong label glue of over-all properties such as the requirement to label glue is also increasingly high, and initial bonding strength is eager to excel, viscosity is wanted height, rate of drying is fast more and more receive people's attention.
At present, the used label glue of mechanize decals cementing agent of China's drinks and beverage mainly contains several kinds of starch, modified starch adhesive, mainly comprises the dextrin glue stick, starch adhesive, modified starch tackiness agent; Z 150PH (PVA) formal and modified PVA formal glue stick; The synthetic macromolecule tackiness agent mainly comprises the acrylate copolymer emulsion tackiness agent, Z 150PH and modified polyvinyl formal tackiness agent and polyacrylonitrile hydrolyzed thing tackiness agent; Polyamide binder, polyvinyl acetate adhesive, carboxymethyl cellulose gum stick are also arranged; Label glue such as casein glue A.
Owing to the set time length of common treated starch label glue on bottle, shelf-time and the image appearance that the easy shortcomings such as requirement of going mouldy, can not satisfy high-speed labeling machine have influence on commodity, so its suitability more and more is restricted; Polyvinyl alcohol label glue (development [J] of the military .PVF type of Chen Yuan high speed adhesive for labelling. Chinese tackiness agent; 1998; 4 (7): 17-18.), its initial bonding strength is too little, and the displacement of trade mark is serious; Not only can not satisfy the requirement of high-speed labeling machine, and in the phenomenon that occurs than cold weather label glue easy freezing using; Then because over-all properties is poor, and rate of drying is slow, the storage time is short for the tackiness agent of polyamide binder, polyvinyl acetate adhesive, CMC 99.5 class, and difficulty or ease adapt to the requirement of modern high-speed labeling machine.
Because all there are the shortcomings such as demand that poor water resistance, rate of drying are slow, can not satisfy industrialized high speed labelling machine in above-mentioned label glue, therefore people's direct production casein type glue arranged also.Casein glue is a kind of novel environment-friendly polymer binder, and is nontoxic, tasteless, odorless; Have higher tack, curing speed is fast, and cohesive force is strong; Have good anti-frozen water property and moisture resistance, be suitable for the high speed price labeling, but the cost of casein glue A is then too high aspect industrial applications.Simultaneously, the glue on the existing market mostly contains the poisonous ion of heavy metal, and like lead sulfate, plumbous type poisonous easy pollution substance such as plumbic acetate is prone to environment is polluted.
Summary of the invention
Technical problem to be solved by this invention provides the working method of the modified casein label adhesive that a kind of cost is low, initial bonding strength is strong, the shelf lives is long, rate of drying is fast, refrigeration property is good.
For addressing the above problem, the working method of a kind of modified casein label adhesive of the present invention may further comprise the steps:
(1) Z 150PH is dissolved in water under 90～95 ℃ temperature, behind insulation 50～60min, is cooled to 70～75 ℃, obtain polyvinyl alcohol solution;
(2) respectively borax, casein food grade are dissolved in water under 60～65 ℃ of temperature, obtain casein food grade solution;
(3) with the mass ratio gelatinization under 80～85 ℃ of temperature of W-Gum and water, obtain the gelatinization W-Gum by 1: 1.2～1: 1.5;
(4) said polyvinyl alcohol solution and said casein food grade solution are incorporated in stirring reaction under 70～75 ℃ of temperature by 1: 0.7～1: 0.9 volume ratio is mixed, obtain mixed liquor A;
(5) under 70～75 ℃ of temperature, dispersion agent is added in the said mixed liquor A, obtain mixed liquid B; Again ammoniacal liquor dropwise is added in the said mixed liquid B, behind insulation reaction 1～1.5h, obtains mixed solution C;
(6) said gelatinization W-Gum and said mixed solution C are stirred by 1: 6.5～1: 8.5 volume ratio after; Add the mixing sequestrant lysate that accounts for said mixed solution C total mass 6～7.2% again; And to use the pH value of ammoniacal liquor adjustment solution be 7.4～7.8, obtains casein label adhesive;
(7) under 70～80 ℃ of temperature, casein label adhesive gets product after 0.39～0.44% Sorbic Acid, 0.29～0.34% Sodium phosphate, dibasic and the said casein label adhesive that will account for said casein label adhesive total mass successively mixes.
The mass ratio of Z 150PH and water is 1: 3.8～1: 4.5 in the said step (1).
The mass ratio of borax and water is 1: 29～1: 31 in the said step (2), and the mass ratio of casein food grade and water is 1: 4～1: 5.
The mass ratio of dispersion agent and mixed liquor A is 1: 6～1: 8.5 in the said step (5).
The volume ratio of ammoniacal liquor and mixed liquid B is 1: 95～1: 105 in the said step (5).
Dispersion agent in the said step (5) is any one in the mixture of urea, an ammonium nitrate or urea and an ammonium nitrate.
The mass ratio of said urea and an ammonium nitrate is 1: 0.6～1: 0.7.
Mixing sequestrant lysate in the said step (6) is the mixed solution of zinc sulfate, zinc acetate and water, and its mass ratio is 8: 6: 75～8: 7: 75.
The present invention compared with prior art has the following advantages:
1, since the present invention heavy metallic salt is come modified casein label adhesive as linking agent, and heavy metal ion dissociate out with the casein food grade molecular chain on carboxyl carry out chelating, therefore, improved the water tolerance and the curing speed of casein label adhesive effectively.Reactional equation is following:
2, because the present invention adopts starch that casein label adhesive is carried out modification, therefore, not only reduce the production cost of casein label adhesive effectively, but also played thickening power, also reduced the wire drawing phenomenon of glue simultaneously.
3, owing to also adopt dispersion agent that casein label adhesive is carried out modification among the present invention, therefore, improved anti-frozen water ability, curing speed and the flowability of glue effectively.
4, the modified casein label adhesive of the present invention being produced carries out viscosity, tack, water-fast (normal-temperature water and frozen water), removes the requirement that mensuration such as mark property, flowability have all reached commercial bottle class label glue; And all has more excellent performance aspect initial bonding strength, flowability, anti-frozen water time and the wash-out than similar casein glue A; Simultaneously its pH value is near neutrality, and preservative activity is preferably arranged as the label glue of stainless steel, aluminium foil class the time.(referring to table 1).
The performance of table 1 product of the present invention and similar casein glue A relatively
| Project | Product of the present invention | Casein glue A | Remarks |
| Outward appearance | Oyster white is translucent, and liquid does not evenly precipitate, and does not have caking | Faint yellow, pungent odour is arranged, liquid does not evenly precipitate, and does not have caking | / |
| The pH value | 7.56 | 8.02 | Measure with PHS-3 type acidometer |
| Solid content | 34.9 | 35.6 | Pressing GB2793-81 measures |
| Viscosity (30 ℃, pa/s) | 89 | 82 | Pressing GB-2794 with the NDJ-1 rotational viscosimeter measures |
| Tack (s) | 15-25 | 24-35 | / |
| Mobile | Good | Very | / |
| Refrigerated stability | 72 hours no alices of 0～5 ℃ in refrigerator refrigeration or obscission | 0～5 ℃ of refrigeration of refrigerator had the alice phenomenon in 72 hours | / |
| The anti-frozen water time | 4 days no obscissions | Obscission was arranged in 1-2 days | / |
| The anti-normal-temperature water time | 4 days no obscissions | Obscission was arranged in 1-2 days | / |
| Alkali liquid washing takes off mark (s) | 65 | 85 | / |
5, because the raw materials for production among the present invention all do not contain poisonous deleterious material, therefore environment is polluted hardly, realize clean production, simultaneously, the discharging of the equal no coupling product of the present invention makes whole process realize zero release.
6, because the present invention only needs some simple heating treatment unit, need not specific installation, therefore, easy reaction.
7, adopt label glue that the inventive method produces to be specially adapted on the Labelling Machine of beer, use adaptable across the manual decals and the mechanize decals packing of the carton of food, beverage, cigarette etc.
Embodiment
Instrument:
The four-hole boiling flask of electric mixer, TM, prolong is housed: Zhengzhou Greatwall Scientific Industrial & Trading Co., Ltd. produces.
Transfer thermoelectric heating jacket: the DW-2 type, Nantong Zhang Zhishan town resolution associating chemical industry electrical apparatus factory produces.
Reagent:
Z 150PH (1750+50): Chemical Reagent Co., Ltd., Sinopharm Group produces.
Casein food grade: industrial one-level casein food grade, Gansu China antelope dairy products group produces.
W-Gum: food grade, the biochemical Ltd in the Kunlun, Zhangye produces.
Borax, urea, an ammonium nitrate, ammoniacal liquor, zinc sulfate, zinc acetate, Sorbic Acid, Sodium phosphate, dibasic are analytical pure.
The working method of 1 one kinds of modified casein label adhesives of embodiment may further comprise the steps:
(1) Z 150PH is joined in the four-hole boiling flask that is contained with zero(ppm) water, and place the thermoelectric heating jacket of accent, stir and be warming up to 90 ℃, Z 150PH is dissolved fully, behind insulation 50～60min, be cooled to 70 ℃, obtain polyvinyl alcohol solution.Wherein the mass ratio of Z 150PH and water is 1: 3.8.
(2) respectively borax, casein food grade are placed the beaker that holds zero(ppm) water, adopt to transfer thermoelectric heating jacket, under 60 ℃ of temperature heated and stirred 30～35min, make it fully be dissolved in water, obtain casein food grade solution; Heat preservation for standby use.Wherein the mass ratio of borax and water is 1: 29, and the mass ratio of casein food grade and water is 1: 4.
(3) W-Gum and water are placed 80 ℃ of zero(ppm) water under the temperature by 1: 1.2 mass ratio, and constantly stir and carry out gelatinization, obtain the gelatinization W-Gum;
(4) casein food grade solution liquid is slowly poured in the flask that holds polyvinyl alcohol solution, adopted and transfer thermoelectric heating jacket stirring reaction 1～1.5h under 70 ℃ of temperature, obtain mixed liquor A; Wherein the volume ratio of polyvinyl alcohol solution and casein food grade solution is 1: 0.7.
(5) under 70 ℃ of temperature, dispersion agent urea is added in the mixed liquor A, stir 5～6min, obtain mixed liquid B; Wherein the mass ratio of dispersion agent and mixed liquor A is 1: 6.Again ammoniacal liquor dropwise is added in the mixed liquid B, behind insulation reaction 1h under 70 ℃ of temperature, obtains mixed solution C; Wherein the volume ratio of ammoniacal liquor and mixed liquid B is 1: 95.
(6) gelatinization W-Gum and mixed solution C are stirred by 1: 6.5 volume ratio after, add the mixing sequestrant lysate that accounts for mixed solution C total mass 6% again, and to use the pH value of ammoniacal liquor adjustment solution be 7.4, stirring 20min obtains casein label adhesive.
Wherein mix the mixed solution that the sequestrant lysate is zinc sulfate, zinc acetate and water, its mass ratio is 8: 6: 75.
(7) under 70 ℃ of temperature, will account for 0.39% Sorbic Acid of casein label adhesive total mass successively, 0.29% Sodium phosphate, dibasic adds in the casein label adhesive, insulated and stirred 15min, casein label adhesive gets product after making it evenly.
The working method of 2 one kinds of modified casein label adhesives of embodiment may further comprise the steps:
(1) Z 150PH is joined in the four-hole boiling flask that is contained with zero(ppm) water, and place the thermoelectric heating jacket of accent, stir and be warming up to 93 ℃, Z 150PH is dissolved fully, behind insulation 50～60min, be cooled to 73 ℃, obtain polyvinyl alcohol solution.Wherein the mass ratio of Z 150PH and water is 1: 4.2.
(2) respectively borax, casein food grade are placed the beaker that holds zero(ppm) water, adopt and transfer thermoelectric heating jacket, under 63 ℃ of temperature, stir 30～35min, make it fully be dissolved in water, obtain casein food grade solution; Heat preservation for standby use.The mass ratio of borax and water is 1: 30, and the mass ratio of casein food grade and water is 1: 4.5.
(3) W-Gum and water are placed 83 ℃ of zero(ppm) water under the temperature by 1: 1.3 mass ratio, and constantly stir and carry out gelatinization, obtain the gelatinization W-Gum;
(4) casein food grade solution liquid is slowly poured in the flask that holds polyvinyl alcohol solution, adopted and transfer thermoelectric heating jacket stirring reaction 1～1.5h under 73 ℃ of temperature, obtain mixed liquor A; Wherein the volume ratio of polyvinyl alcohol solution and casein food grade solution is 1: 0.8.
(5) under 73 ℃ of temperature, dispersion agent an ammonium nitrate is added in the mixed liquor A, stir 5～6min, obtain mixed liquid B; Wherein the mass ratio of dispersion agent and mixed liquor A is 1: 7.Again ammoniacal liquor dropwise is added in the mixed liquid B, behind the insulation reaction 1.3h, obtains mixed solution C; Wherein the volume ratio of ammoniacal liquor and mixed liquid B is 1: 100.
(6) gelatinization W-Gum and mixed solution C are stirred by 1: 7.5 volume ratio after, add the mixing sequestrant lysate that accounts for mixed solution C total mass 6.6% again, and to use the pH value of ammoniacal liquor adjustment solution be 7.6, stirring 20min obtains casein label adhesive.
Wherein mix the mixed solution that the sequestrant lysate is zinc sulfate, zinc acetate and water, its mass ratio is 8: 6.5: 75.
(7) under 75 ℃ of temperature, will account for 0.42% Sorbic Acid of casein label adhesive total mass successively, 0.32% Sodium phosphate, dibasic adds in the casein label adhesive, insulated and stirred 15min, casein label adhesive gets product after making it evenly.
The working method of 3 one kinds of modified casein label adhesives of embodiment may further comprise the steps:
(1) Z 150PH is joined in the four-hole boiling flask that is contained with zero(ppm) water, and place the thermoelectric heating jacket of accent, stir and be warming up to 95 ℃, Z 150PH is dissolved fully, behind insulation 50～60min, be cooled to 75 ℃, obtain polyvinyl alcohol solution.Wherein the mass ratio of Z 150PH and water is 1: 4.5.
(2) respectively borax, casein food grade are placed the beaker that holds zero(ppm) water, adopt and transfer thermoelectric heating jacket, under 65 ℃ of temperature, stir 30～35min, make it fully be dissolved in water, obtain casein food grade solution; Heat preservation for standby use.The mass ratio of borax and water is 1: 31, and the mass ratio of casein food grade and water is 1: 5.
(3) W-Gum and water are placed 85 ℃ of zero(ppm) water under the temperature by 1: 1.5 mass ratio, and constantly stir and carry out gelatinization, obtain the gelatinization W-Gum;
(4) casein food grade solution liquid is slowly poured in the flask that holds polyvinyl alcohol solution, adopted and transfer thermoelectric heating jacket stirring reaction 1～1.5h under 75 ℃ of temperature, obtain mixed liquor A; Wherein the volume ratio of polyvinyl alcohol solution and casein food grade solution is 1: 0.9.
(5) under 75 ℃ of temperature, the mixture of dispersion agent urea and an ammonium nitrate is added in the mixed liquor A, stir 5～6min, obtain mixed liquid B; Wherein the mass ratio of urea and an ammonium nitrate is 1: 0.6; The mass ratio of dispersion agent and mixed liquor A is 1: 8.
Again ammoniacal liquor dropwise is added in the mixed liquid B, be incubated anti-1.5h after, obtain mixed solution C; Wherein the volume ratio of ammoniacal liquor and mixed liquid B is 1: 105.
(6) gelatinization W-Gum and mixed solution C are stirred by 1: 8.5 volume ratio after, add the mixing sequestrant lysate that accounts for mixed solution C total mass 7.2% again, and to use the pH value of ammoniacal liquor adjustment solution be 7.8, stirring 20min obtains casein label adhesive.
Wherein mix the mixed solution that the sequestrant lysate is zinc sulfate, zinc acetate and water, its mass ratio is 8: 7: 75.
(7) under 80 ℃ of temperature, will account for 0.44% Sorbic Acid of casein label adhesive total mass successively, 0.34% Sodium phosphate, dibasic adds in the casein label adhesive, insulated and stirred 15min, casein label adhesive gets product after making it evenly.
The working method of 4 one kinds of modified casein label adhesives of embodiment may further comprise the steps:
(1) Z 150PH is joined in the four-hole boiling flask that is contained with zero(ppm) water, and place the thermoelectric heating jacket of accent, stir and be warming up to 92 ℃, Z 150PH is dissolved fully, behind insulation 50～60min, be cooled to 72 ℃, obtain polyvinyl alcohol solution.Wherein the mass ratio of Z 150PH and water is 1: 4.5.
(2) respectively borax, casein food grade are placed the beaker that holds zero(ppm) water, adopt and transfer thermoelectric heating jacket, under 62 ℃ of temperature, stir 30～35min, make it fully be dissolved in water, obtain casein food grade solution; Heat preservation for standby use.The mass ratio of borax and water is 1: 31, and the mass ratio of casein food grade and water is 1: 5.
(3) W-Gum and water are placed 82 ℃ of zero(ppm) water under the temperature by 1: 1.2 mass ratio, and constantly stir and carry out gelatinization, obtain the gelatinization W-Gum;
(4) casein food grade solution liquid is slowly poured in the flask that holds polyvinyl alcohol solution, adopted and transfer thermoelectric heating jacket stirring reaction 1～1.5h under 72 ℃ of temperature, obtain mixed liquor A; Wherein the volume ratio of polyvinyl alcohol solution and casein food grade solution is 1: 0.9.
(5) under 72 ℃ of temperature, the mixture of dispersion agent urea and an ammonium nitrate is added in the mixed liquor A, stir 5～6min, obtain mixed liquid B; Wherein the mass ratio of urea and an ammonium nitrate is 1: 0.7; The mass ratio of dispersion agent and mixed liquor A is 1: 7.5.
Again ammoniacal liquor dropwise is added in the mixed liquid B, behind insulation reaction 1～1.5h, obtains mixed solution C; Wherein the volume ratio of ammoniacal liquor and mixed liquid B is 1: 105.
(6) gelatinization W-Gum and mixed solution C are stirred by 1: 7 volume ratio after, add the mixing sequestrant lysate that accounts for mixed solution C total mass 6.5% again, and to use the pH value of ammoniacal liquor adjustment solution be 7.5, stirring 20min obtains casein label adhesive.
Wherein mix the mixed solution that the sequestrant lysate is zinc sulfate, zinc acetate and water, its mass ratio is 8: 7: 75.
(7) under 72 ℃ of temperature, will account for 0.41% Sorbic Acid of casein label adhesive total mass successively, 0.31% Sodium phosphate, dibasic adds in the casein label adhesive, insulated and stirred 15min, casein label adhesive gets product after making it evenly.
The working method of 5 one kinds of modified casein label adhesives of embodiment may further comprise the steps:
(1) Z 150PH is joined in the four-hole boiling flask that is contained with zero(ppm) water, and place the thermoelectric heating jacket of accent, stir and be warming up to 94 ℃, Z 150PH is dissolved fully, behind insulation 50～60min, be cooled to 74 ℃, obtain polyvinyl alcohol solution.Wherein the mass ratio of Z 150PH and water is 1: 4.5.
(2) respectively borax, casein food grade are placed the beaker that holds zero(ppm) water, adopt and transfer thermoelectric heating jacket, under 64 ℃ of temperature, stir 30～35min, make it fully be dissolved in water, obtain casein food grade solution; Heat preservation for standby use.The mass ratio of borax and water is 1: 31, and the mass ratio of casein food grade and water is 1: 5.
(3) W-Gum and water are placed 84 ℃ of zero(ppm) water under the temperature by 1: 1.4 mass ratio, and constantly stir and carry out gelatinization, obtain the gelatinization W-Gum;
(4) casein food grade solution liquid is slowly poured in the flask that holds polyvinyl alcohol solution, adopted and transfer thermoelectric heating jacket stirring reaction 1～1.5h under 74 ℃ of temperature, obtain mixed liquor A; Wherein the volume ratio of polyvinyl alcohol solution and casein food grade solution is 1: 0.9.
(5) under 74 ℃ of temperature, the mixture of dispersion agent urea and an ammonium nitrate is added in the mixed liquor A, stir 5～6min, obtain mixed liquid B; Wherein the mass ratio of urea and an ammonium nitrate is 1: 0.7; The mass ratio of dispersion agent and mixed liquor A is 1: 8.5.
Again ammoniacal liquor dropwise is added in the mixed liquid B, behind insulation reaction 1～1.5h, obtains mixed solution C; Wherein the volume ratio of ammoniacal liquor and mixed liquid B is 1: 105.
(6) gelatinization W-Gum and mixed solution C are stirred by 1: 8 volume ratio after, add the mixing sequestrant lysate that accounts for mixed solution C total mass 7.0% again, and to use the pH value of ammoniacal liquor adjustment solution be 7.7, stirring 20min obtains casein label adhesive.
Wherein mix the mixed solution that the sequestrant lysate is zinc sulfate, zinc acetate and water, its mass ratio is 8: 7: 75.
(7) under 74 ℃ of temperature, will account for 0.43% Sorbic Acid of casein label adhesive total mass successively, 0.33% Sodium phosphate, dibasic adds in the casein label adhesive, insulated and stirred 15min, casein label adhesive gets product after making it evenly.
Claims (6)
1. the working method of a modified casein label adhesive may further comprise the steps:
(1) Z 150PH is dissolved in water under 90～95 ℃ temperature, behind insulation 50～60min, is cooled to 70～75 ℃, obtain polyvinyl alcohol solution; The mass ratio of said Z 150PH and water is 1: 3.8～1: 4.5;
(2) respectively borax, casein food grade are dissolved in water under 60～65 ℃ of temperature, obtain casein food grade solution; The mass ratio of said borax and water is 1: 29～1: 31, and the mass ratio of casein food grade and water is 1: 4～1: 5;
(3) with the mass ratio gelatinization under 80～85 ℃ of temperature of W-Gum and water, obtain the gelatinization W-Gum by 1: 1.2～1: 1.5;
(4) said polyvinyl alcohol solution and said casein food grade solution are incorporated in stirring reaction under 70～75 ℃ of temperature by 1: 0.7～1: 0.9 volume ratio is mixed, obtain mixed liquor A;
(5) under 70～75 ℃ of temperature, dispersion agent is added in the said mixed liquor A, obtain mixed liquid B; Again ammoniacal liquor dropwise is added in the said mixed liquid B, behind insulation reaction 1～1.5h, obtains mixed solution C;
(6) said gelatinization W-Gum and said mixed solution C are stirred by 1: 6.5～1: 8.5 volume ratio after; Add the mixing sequestrant lysate that accounts for said mixed solution C total mass 6～7.2% again; And to use the pH value of ammoniacal liquor adjustment solution be 7.4～7.8, obtains casein label adhesive;
(7) under 70～80 ℃ of temperature, casein label adhesive gets product after 0.39～0.44% Sorbic Acid, 0.29～0.34% Sodium phosphate, dibasic and the said casein label adhesive that will account for said casein label adhesive total mass successively mixes.
2. the working method of modified casein label adhesive as claimed in claim 1 is characterized in that: the mass ratio of dispersion agent and mixed liquor A is 1: 6～1: 8.5 in the said step (5).
3. the working method of modified casein label adhesive as claimed in claim 1 is characterized in that: the volume ratio of ammoniacal liquor and mixed liquid B is 1: 95～1: 105 in the said step (5).
4. the working method of modified casein label adhesive as claimed in claim 1 is characterized in that: the dispersion agent in the said step (5) is any one in the mixture of urea, an ammonium nitrate or urea and an ammonium nitrate.
5. the working method of modified casein label adhesive as claimed in claim 4, it is characterized in that: the mass ratio of said urea and an ammonium nitrate is 1: 0.6～1: 0.7.
6. the working method of modified casein label adhesive as claimed in claim 1, it is characterized in that: the mixing sequestrant lysate in the said step (6) is the mixed solution of zinc sulfate, zinc acetate and water, and its mass ratio is 8: 6: 75～8: 7: 75.
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Families Citing this family (5)
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| CN104910858A (en) * | 2015-05-19 | 2015-09-16 | 安徽省华凯轻工科技有限公司 | Modified casein glue with high adhesive force, and preparation method thereof |
| CN106566440A (en) * | 2016-10-28 | 2017-04-19 | 无锡市永兴金属软管有限公司 | Composite modified environment-friendly metal corrugated pipe adhesive and preparation method thereof |
| CN107118718A (en) * | 2017-04-21 | 2017-09-01 | 唐林元 | A kind of preparation method of water-fast quick dried environment protection beer label adhesive |
| CN111073555A (en) * | 2018-10-22 | 2020-04-28 | 沈阳万合胶业股份有限公司 | Strong water-resistant trademark adhesive and preparation method thereof |
| CN110129002A (en) * | 2019-05-30 | 2019-08-16 | 刘勇 | A kind of preparation method of aluminum foil backing paper specific complex adhesive |
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